Powerful short-circuit wire hoisting device for overhead line ice-melting automatic short-circuit device

Abstract

The invention discloses a powerful short-circuit wire hoisting device for an overhead line ice melting automatic short-circuit device, which comprises a tension friction wheel assembly, the tension friction wheel assembly comprises a main traction cylinder and an auxiliary traction cylinder, the main traction cylinder is internally provided with a cavity, and a speed reducer is coaxially mounted in the cavity; the line concentration wheel assembly comprises a line concentration roller; the driving assembly is used for driving the main traction cylinder and the line concentration roller to rotate; the supporting assembly comprises two traction wheel hanging plates which are oppositely arranged, and the main traction cylinder, the auxiliary traction cylinder and the line concentration roller are all installed on the traction wheel hanging plates; the traction device has the beneficial effects that through the integrated design that the speed reducer is arranged in the main traction cylinder, the size of the device is controlled within 300 * 300 * 300 mm, and the traction device is adaptive to a narrow space of an automatic ice melting device; and the tension friction wheel assembly is matched with the high-power speed reducer, so that the tension greater than or equal to 300kgf and the power greater than or equal to 4kW can be output, and the hoisting requirement of a short-circuit wire greater than 300kg is met.

Description

Technical Field

[0001] This invention belongs to the technical field of short-circuit de-icing hardware for overhead power lines, specifically relating to a powerful short-circuit hoisting device for an automatic short-circuit device for de-icing overhead lines. Background Technology

[0002] As the main framework of the power system, the icing problem of 500kV transmission lines directly threatens the safety of the power grid. In the existing technology, 500kV icing is mainly carried out by fixed icing method, which has the disadvantages of high cost and limited icing range. At the same time, during the icing period, maintenance personnel need to climb the towers to set up conductor short-circuit measures, which is not only difficult to operate, but also poses a very high personal safety risk, making it difficult to complete the icing preparation quickly.

[0003] To solve the above problems, it is necessary to achieve fully automated, unmanned installation of short-connectors. However, the core difficulty lies in the limited internal space of the automatic de-icing device: the size must be limited to within 300×300×300mm. Since the spacing of 500kV four-split overhead lines is about 400mm, the deployment space left for the device is limited. However, it is necessary to integrate a component that can lift short-connectors weighing more than 300kg, and this component must meet the requirements of tensile strength ≥300kgf, output power ≥4kW, and cable length ≥50m.

[0004] Existing hoisting equipment, such as winches, has the following drawbacks: The winding and tension generation share the same roller, which requires high resistance to deformation of the lifting cable, resulting in excessive weight of the lifting cable and the device, which is not suitable for the lightweight deployment of the ice melting device. The drive and transmission devices are not powerful enough to meet the requirements of high tension and high power. Its overall size is too large to fit into the cramped space of an automatic ice-melting device. Summary of the Invention

[0005] The purpose of this invention is to provide a powerful short-connection hoisting device for an automatic short-connection device for de-icing overhead lines, solving the problem that existing hoisting equipment cannot achieve high tensile force, high power, and long cable hoisting in confined spaces. Specifically, it includes: achieving tensile force output of over 300 kgf in a limited space; reducing the weight of the cable and device to meet the lightweight requirements of the automatic de-icing device; optimizing the structural layout to improve space utilization while ensuring stress stability and reliability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a powerful short-connector hoisting device for an automatic short-connection device for de-icing overhead lines, comprising... A tension friction wheel assembly, comprising a main traction cylinder and a secondary traction cylinder, wherein the main traction cylinder has an internal cavity and a speed reducer is coaxially mounted inside the cavity; A cable feeder assembly, the cable feeder assembly including a cable feeder roller; Drive assembly used to drive the main traction drum and hub drum to rotate; The support assembly includes two opposing traction wheel mounting plates, on which the main traction cylinder, auxiliary traction cylinder, and cable roller are all mounted; the main traction cylinder and auxiliary traction cylinder cooperate to pull the suspension cable by friction.

[0007] As a preferred embodiment of the present invention, the left end of the main traction cylinder is fixed to the outer side of the output end of the reducer, and the right end is connected to the inner side of the right traction wheel mounting plate through a cross roller bearing.

[0008] As a preferred technical solution of the present invention, it also includes a speed reducer base, wherein the inner side of the output end of the speed reducer base is fixed to the inner side of the left traction wheel mounting plate, and the other end passes through the circular hole of the right traction wheel mounting plate.

[0009] As a preferred technical solution of the present invention, the auxiliary traction cylinder is located below the main traction cylinder, parallel to the main traction cylinder, and is fixed to the inner side of the two traction wheel mounting plates by bearings and plug screws.

[0010] As a preferred technical solution of the present invention, the drive assembly includes a first drive member and a second drive member; the first drive member is installed on the outside of the right traction wheel mounting plate, and its output shaft is connected to the input end of the reducer; the second drive member is a brushless motor that can drive the cable roller to rotate.

[0011] As a preferred technical solution of the present invention, the brushless motor is fixed to the outside of the left traction wheel mounting plate by a C-shaped motor base, the motor shaft passes through the C-shaped motor base and is connected to the synchronous pulley, the synchronous pulley is located in the clearance area formed by the inside of the C-shaped motor base and the outside of the traction wheel mounting plate, and is connected to the cable roller drive by a belt.

[0012] As a preferred embodiment of the present invention, the support assembly further includes a traction wheel mounting plate spacer, the two ends of which are respectively fixed to the inner sides of two traction wheel mounting plates.

[0013] As a preferred technical solution of the present invention, the cable gathering wheel assembly further includes a cable gathering drum guide rope wheel shaft, which is fixed to the outside of the left traction wheel mounting plate and is coaxial with the spacer bar of the traction wheel mounting plate.

[0014] As a preferred technical solution of the present invention, it further includes a rope bending plate, wherein the rope bending plate is provided with a synchronous pulley for assisting in guiding the direction of the hoisting cable, the rope bending plate is provided with an extension, and the extension and the traction wheel mounting plate are provided with limiting guide components. The limiting guide components include a limiting plate provided on the extension, a limiting groove opened on the traction wheel mounting plate for the limiting plate to be inserted, a guide plate provided on the inner side of the limiting groove and abutting against the limiting plate, and fasteners provided on the extension and detachably connected to the traction wheel mounting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By integrating the speed reducer into the main traction cylinder, the device size is controlled within 300×300×300mm, making it suitable for the narrow space of automatic ice melting devices. By using a tension friction wheel assembly in conjunction with a high-power reducer, it can output a tensile force of ≥300kgf and a power of ≥4kW, meeting the hoisting requirements of short-wire cables weighing over 300kg; Through tension friction and cable separation design, soft materials such as Kevlar fiber and nylon rope can be used for the hoisting cable to reduce the diameter and weight of the cable, while reducing the overall weight of the device. The longitudinally connected force path shortens the gravity arm, reduces the bearing bending moment, improves the stability of the device under high tension, and extends its service life. To avoid problems such as cable jamming, wear, or breakage, and to meet the reliability requirements of unmanned automated ice melting operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the front structure of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a side view of the structure of the present invention; Figure 5 This is a top view of the structure of the present invention; Figure 6 This is a partial cross-sectional view of the splicing structure of the bent rope plate and the traction wheel mounting plate of the present invention; In the diagram: 1. Brushless motor; 2. Traction wheel mounting plate; 21. Limiting groove; 210. Guide plate; 3. Curved rope plate; 4. Secondary traction cylinder; 5. Traction wheel mounting plate spacer bar; 6. Main traction cylinder; 7. Cable drum guide rope wheel axle; 8. Cable drum; 9. Extension; 91. Limiting plate; 92. Fastener. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0018] Please see Figures 1-6 This is the first embodiment of the present invention, which provides a powerful short-connector hoisting device for an automatic short-connection device for de-icing overhead lines, including... The tension friction wheel assembly includes a main traction cylinder 6 and a secondary traction cylinder 4. The main traction cylinder 6 has an internal cavity in which a reducer is coaxially mounted. The left end of the main traction cylinder 6 is fixed to the outer side of the reducer output end, and the right end is connected to the inner side of the right traction wheel mounting plate 2 via a crossed roller bearing. The crossed roller bearing has the ability to withstand both radial and axial loads simultaneously. Its compact structure (suitable for narrow spaces within 300×300×300mm) ensures stable rotation of the main traction cylinder 6 under high tension (≥300kgf) and reduces swaying. The left end is fixed to the reducer output end to directly transmit torque, improving power transmission efficiency and avoiding power loss. A cable roller assembly, comprising a cable roller 8; A drive assembly for driving the main traction drum 6 and the cable-collecting drum 8 to rotate; the drive assembly includes a first drive component and a second drive component; the first drive component is installed on the outside of the right traction wheel mounting plate 2, and its output shaft is connected to the input end of the reducer; the second drive component is a brushless motor 1, which can drive the cable-collecting drum 8 to rotate. The first drive component and the second drive component are controlled independently to realize the separate operation of tension traction and cable collection. The speed matching of the two can be flexibly adjusted according to the tension of the lifting cable to avoid the lifting cable being too loose or too tight; the brushless motor 1 is small in size and has high power density, which is suitable for the miniaturization design of the device, and has high operating efficiency and long service life, meeting the reliability requirements of fully automatic unmanned operation; The support assembly includes two opposing traction wheel mounting plates 2. The main traction cylinder 6, the auxiliary traction cylinder 4, and the cable roller 8 are all mounted on the traction wheel mounting plates 2. The main traction cylinder 6 and the auxiliary traction cylinder 4 work together to pull the cable through friction.

[0019] In this embodiment, preferably, it also includes a reducer base. The inner side of the output end of the reducer base is fixed to the inner side of the left traction wheel mounting plate 2, and the other end passes through the circular hole of the right traction wheel mounting plate 2. The reducer base is fixed by the two traction wheel mounting plates 2 to form a stable support structure, which enhances the installation rigidity of the reducer when running at high power (≥4kW) and avoids loosening of components due to vibration. The design of the circular hole passing through the right traction wheel mounting plate 2 makes full use of space and avoids additional occupation of the internal space of the device, which meets the requirements of miniaturization.

[0020] In this embodiment, preferably, the auxiliary traction cylinder 4 is located below the main traction cylinder 6, parallel to the main traction cylinder 6, and is fixed to the inner side of the traction wheel mounting plates 2 on both sides by bearings and plug screws. The parallel arrangement of the auxiliary traction cylinder 4 and the main traction cylinder 6 can ensure that the clamping force of both on the lifting cable is uniform, avoiding the displacement or wear of the lifting cable due to uneven force. The bearing reduces the frictional resistance when the auxiliary traction cylinder 4 rotates, improving the transmission efficiency. The plug screw fixing method has a compact structure, is suitable for installation in narrow spaces, and at the same time ensures the installation stability of the auxiliary traction cylinder 4 under high tension.

[0021] In this embodiment, preferably, the brushless motor 1 is fixed to the outside of the left traction wheel mounting plate 2 via a C-shaped motor base. The motor shaft passes through the C-shaped motor base and connects to the synchronous pulley. The synchronous pulley is located in the clearance area formed by the inner side of the C-shaped motor base and the outer side of the traction wheel mounting plate 2, and is connected to the cable roller 8 via a belt. The C-shaped motor base has a compact structure, which can integrate the brushless motor 1 and the synchronous pulley in a limited space, avoiding occupying the core space inside the device. The clearance area protects the synchronous pulley and belt, preventing interference with other components. The belt drive has a buffering and shock absorption effect, reducing the vibration of the brushless motor 1 during operation and reducing the transmission to the cable roller 8, ensuring the smooth winding of the cable and preventing the cable from getting tangled or jumping out of the groove due to vibration.

[0022] In this embodiment, preferably, the support assembly further includes a traction wheel plate spacer 5. The two ends of the traction wheel plate spacer 5 are respectively fixed to the inner sides of the two traction wheel plates 2. The traction wheel plate spacer 5 connects the two traction wheel plates 2 to form a rigid frame structure, which enhances the overall strength and deformation resistance of the support assembly, avoids deformation of the traction wheel plates 2 due to excessive tension when hoisting short wires weighing more than 300kg, ensures the relative position accuracy of the main / auxiliary traction cylinder and the cable roller 8, and ensures hoisting stability.

[0023] In this embodiment, preferably, the cable gathering wheel assembly further includes a cable drum guide wheel shaft 7. The cable drum guide wheel shaft 7 is fixed to the outside of the left traction wheel mounting plate 2 and is coaxial with the traction wheel mounting plate spacer 5. The coaxiality of the cable drum guide wheel shaft 7 and the traction wheel mounting plate spacer 5 can ensure that the direction of the lifting cable from the tension friction wheel assembly to the cable gathering drum 8 is consistent, avoiding wear or tangling of the lifting cable due to guide deviation. The guide wheel shaft 7 guides the lifting cable into the cable gathering drum 8 in an orderly manner, improving the winding efficiency and adapting to the winding requirements of lifting cables longer than 50m.

[0024] In this embodiment, preferably, it also includes a bending rope plate 3, on which a synchronous wheel is provided to assist in guiding the direction of the hoisting cable. The synchronous wheel on the bending rope plate 3 further assists in guiding the direction of the hoisting cable, and together with the guide rope wheel shaft 7 of the cable drum, forms a multi-segment guide to ensure that the hoisting cable does not deviate or wear in complex paths. Example

[0025] Please see Figures 1-6 This is the second embodiment of the present invention, which is based on the previous embodiment, but differs in that: The bending rope plate 3 is provided with an extension 9, and the extension 9 and the traction wheel mounting plate 2 are provided with limiting guide components. The limiting guide components include a limiting plate 91 provided on the extension 9, a limiting groove 21 opened on the traction wheel mounting plate 2 for the limiting plate 91 to be inserted, the limiting plate 91 and the limiting groove 21 cooperate to ensure the installation and positioning accuracy of the bending rope plate 3, a guide plate 210 provided on the inner side of the limiting groove 21 and pressed against the limiting plate 91, and a fastener 92 provided on the extension 9 and detachably connected to the traction wheel mounting plate 2. The guide plate 210 assists the limiting plate 91 to be quickly inserted and positioned, and the fastener 92 achieves stable installation and removal, which is convenient for maintenance. The overall structure enhances the installation stability of the bending rope plate 3 under the tension of the sling, and ensures the reliability of the guiding function.

[0026] The working principle and usage process of this invention are as follows: The hoisting device is installed as a whole at the preset position of the overhead line de-icing automatic short-circuit device, ensuring that the two traction wheel hanging plates 2 form a stable frame through the traction wheel hanging plate spacer 5, and that the relative positions of the main traction cylinder 6, auxiliary traction cylinder 4, and cable drum 8 are accurate, adapting to the narrow deployment space (≤300×300×300mm) of a 500kV four-split overhead line; at the same time, one end of the hoisting cable made of Kevlar fiber or nylon rope is connected to the short-circuit wire to be hoisted (weight ≤300kg), and the other end is passed through the synchronous wheel on the bent rope plate 3, the rope groove between the main traction cylinder 6 and the auxiliary traction cylinder 4, and the cable drum guide rope wheel shaft 7 in sequence, and finally fixed on the cable drum 8; The first drive unit (right-side motor) operates, driving the main traction drum 6 to rotate via a reducer. The main traction drum 6 drives the auxiliary traction drum 4 to rotate synchronously in the opposite direction via a belt. The friction between the two and the cable generates a traction force of ≥300kgf, pulling the cable and shorting wire upward. At the same time, the second drive unit (brushless motor 1) starts, driving the cable winding drum 8 to rotate via a synchronous pulley and belt in the C-shaped motor base. The cable is wound up synchronously with a slight tension. The cable winding drum guide wheel shaft 7 guides the cable winding drum to ensure that the cable is wound in an orderly manner on the cable winding drum 8, avoiding slack or accumulation. During the hoisting process, the speed of the first and second drive components is independently controlled to flexibly match the cable tension: when the cable tension is too high, the traction speed of the main / auxiliary traction drum is reduced or the winding speed of the cable roller 8 is increased; when the cable is slack, the traction speed is increased or the winding speed is reduced to prevent the cable from deviating, wearing, or tangling; the cross roller bearings ensure that the main traction drum 6 rotates stably under high tension, and the traction wheel hanger spacer 5 enhances the rigidity of the support structure to avoid the device from being deformed due to force and affecting the hoisting accuracy; After the shorting wire is hoisted to the preset de-icing position of the overhead line and the installation is completed, the reverse start drive assembly is activated: the first drive component drives the main / auxiliary traction drum to rotate in the opposite direction to reduce the traction force; the brushless motor 1 drives the cable drum 8 to rotate in the opposite direction to release the hoisting cable. The hoisting cable is lowered smoothly under the guidance of the bending plate 3 and the cable drum guide wheel shaft 7 until the hoisting cable is separated from the shorting wire. After the hoisting cable is completely retracted into the cable drum 8, the drive assembly is turned off to complete one hoisting operation. If continuous operation is required, the above steps can be repeated. The entire process does not require manual intervention and is suitable for fully automatic unmanned ice melting operations. Through structural optimization, the reliability and stability under high power (≥4kW) and long hoisting cable (≥50m) conditions are guaranteed.

[0027] Although embodiments of the invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powerful short-circuit hoisting device for an automatic short-circuit device for de-icing overhead lines, characterized in that: include Tension friction wheel assembly, the tension friction wheel assembly includes a main traction cylinder (6) and a secondary traction cylinder (4), the main traction cylinder (6) has a cavity inside, and a reducer is coaxially installed in the cavity; A feeder assembly, the feeder assembly including a feeder roller (8). Drive assembly for driving the main traction drum (6) and the hub drum (8) to rotate; The support assembly includes two opposing traction wheel mounting plates (2), and the main traction cylinder (6), the auxiliary traction cylinder (4) and the cable roller (8) are all mounted on the traction wheel mounting plates (2); the main traction cylinder (6) and the auxiliary traction cylinder (4) cooperate to pull the cable by friction.

2. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing overhead lines according to claim 1, characterized in that: The left end of the main traction cylinder (6) is fixed to the outside of the output end of the reducer, and the right end is connected to the inside of the right traction wheel mounting plate (2) through a cross roller bearing.

3. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing overhead lines according to claim 2, characterized in that: It also includes a speed reducer base, the inner side of the output end of which is fixed to the inner side of the left traction wheel mounting plate (2), and the other end passes through the circular hole of the right traction wheel mounting plate (2).

4. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing overhead lines according to claim 1, characterized in that: The auxiliary traction cylinder (4) is located below the main traction cylinder (6), parallel to the main traction cylinder (6), and is fixed to the inner side of the two traction wheel mounting plates (2) by bearings and plug screws.

5. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing overhead lines according to claim 1, characterized in that: The drive assembly includes a first drive component and a second drive component; the first drive component is installed on the outside of the right traction wheel mounting plate (2), and its output shaft is connected to the input end of the reducer; the second drive component is a brushless motor (1), which can drive the hub roller (8) to rotate.

6. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing of overhead lines according to claim 5, characterized in that: The brushless motor (1) is fixed to the outside of the left traction wheel mounting plate (2) by a C-shaped motor base. The motor shaft passes through the C-shaped motor base and is connected to the synchronous wheel. The synchronous wheel is located in the clearance area formed by the inner side of the C-shaped motor base and the outer side of the traction wheel mounting plate (2), and is connected to the cable roller (8) by a belt.

7. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing of overhead lines according to claim 1, characterized in that: The support assembly also includes a traction wheel mounting plate spacer (5), the two ends of which are fixed to the inner sides of two traction wheel mounting plates (2).

8. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing of overhead lines according to claim 1, characterized in that: The cable gathering wheel assembly also includes a cable gathering drum guide wheel shaft (7), which is fixed to the outside of the left traction wheel mounting plate (2) and is coaxial with the traction wheel mounting plate spacer (5).

9. The heavy-duty short-connector hoisting device for automatic short-connection device for de-icing of overhead lines according to claim 1, characterized in that: It also includes a rope bending plate (3), on which a synchronous wheel for assisting in guiding the direction of the hoisting cable is provided. An extension (9) is provided on the rope bending plate (3), and a limiting guide component is provided on the extension (9) and the traction wheel mounting plate (2). The limiting guide component includes a limiting plate (91) provided on the extension (9), a limiting groove (21) opened on the traction wheel mounting plate (2) for the limiting plate (91) to be inserted, a guide plate (210) provided on the inner side of the limiting groove (21) and pressed against the limiting plate (91), and a fastener (92) provided on the extension (9) and detachably connected to the traction wheel mounting plate (2).

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